Yankees Retire Jorge Posada's No. 20, With a Nod to No. 15 - The New York Times
Rivera] League source confirms league-wide retirement of Roberto Clemente's #21 is not happening at this time and there is no current plan in place for it to occur : r/baseball
Yankees Retire Jorge Posada's No. 20, With a Nod to No. 15 - The New York Times
Former Yankees who wore No. 2 share memories of number and Derek Jeter – New York Daily News
MORE
JORGE POSADA NEW YORK YANKEES SIGNED
New York Yankees - Wikipedia
Jorge Posada and the Yankees Struggle to Transition - The New York Times
Derek Jeter releases statement on Alex Rodriguez: 'He lives and breathes baseball' – New York Daily News
New York Yankees - Wikipedia
Is Don Mattingly the only New York Yankees player to not be booed by New York Yankee fans at Yankee Stadium? If so, why? - Quora
Yankees Retire Jorge Posada's No. 20, With a Nod to No. 15 - The New York Times
OPINION: Jorge Posada A Great Yankee, But Not A Hall Of Famer - SB Nation New York